Aeroplane wing



0. L. KIENTZ AEROPLANE WING Jan. 27, 1931.

Filed July 22, 1929 I5 Sheets-Sheet 1 MN MN 9 N v 9 z OQ z N. 095 Q \N N w 7 a N w MN m ajzz'emzmvm ATTORNEY Jan. 27, 1931. 5, L, KIENTZ I 1,790,309

AEROPLANE WING Filed July 22, 1929 3 Sheets-Sheet 2 a u m INVENTOR ATTORNEY Jan. 27, 1931. o. KIENTZ 1,790,309

AEROPLANE WING Filed July 22, 1929 a Sheets-Sheet s w m T Patented Jan. 27, 1931 i UNITED "STATES PATENT OFFICE OTTO L. KIENTZ, or MERIDE-N, KANSAS AEROPLANE WING Application 'filed July 22, 1929. Serial No. 380,075.

This invention relates to a variable camber hingedlyconnected at their front .with the Wing for" aeroplanes, the general object of the nose of the wing, as shown at 1. and the rear invention being to provide a flexible cover partof each cover is formed with a plurality for the upper and lower surfaces of the wing, of slots 2 through which bolts 3 or the like 5 With means for adjusting said coverstoward pass, these bolts also passing through the 50 p and away from the wing so as to increase and strips 4 into the rear spar'5 of the wing. Each decrease the thickness of the wing, thus encover has a certain amount of flexibility so abling the wing to have a greater camber that it can be flexed and when the cover is when the craft is taking off or landing and moved away from the wing, the rear end when the craft is in flight, the covers are thereof slides on the plate 4, the slots'2 manipulated to give the wing its normal through which the bolts 3 pass permitting streamline shape, which permits the craft to this movement. A tubular shaft 6 passes travel at great speed. through the wing in front of the front spar This invention also consists in certain 6' thereof, and saidshaft has a plurality of other features of construction and in the arms 7 thereon which are connected by the combination and arrangement of the several links 8 and 9 with the upper and lower covers. parts, to be hereinafter fully described, illus- This shaft 6 is adapted to be rocked from trated in the accompanying drawings and suitable means placed in the cockpit so that specifically pointed out in the appended the'pilot can raise or lower the covers as he claims. v desires. As shown, the parts are so arranged 65 In describing the invention in detail, refthat both the members A and B are moved erence will behad to the accompanying drawin the same. direction when the shaft is ings wherein like characters denote like or rocked, but the member A is moved to a corresponding parts throughout the several greater extent than the member B, due to views, and inwhich: the fact that the link 8 is connected to the 7 Figure 1 is an end View of a wing conend of its arm 7, while the link 9 is connected 'structed in accordance with this invention, to its'arm intermediate the ends of the arm. parts being, broken away? I Thus both the members Aand B are moved igure 2 is a longitudinal sectional view upwardly together when the shaft is rocked of the improved wing. in one 'direction and downwardly when the 75 Figure 3 is a fragmentary plan view with shaft is rocked in the opposite direction;

parts broken away, showing the cover formed Chains 10or the like connect the covers with I a framework covered with cloth or the the wing and act as safety means to pref ue. s

. vent undue movement of the covers. F lgure 4 IS a section on lined-4 of Fig- From the foregoing it willbe seen that the so ure 1. camber of the wing can be readily changed by Y Figure 5 is a view similar to Figure 2, but raising or lowering the covers so that the wing showing the covers formed of metal. can 0 increased in thickness when the craft Figure 6 is a fragmentary plan View of is to land or take off, this additional thick- Fi ure 5.

igure 7 is a section on line 77 of F igreduce the speed. After the craft is in'the ure 5. air, the covers are, moved in a reversedirekr- As shown in these views, I provide an tion so as to decrease the camberand givefthel' ness acting to increase the lifting action and "s3" upper cover A and a lower cover B for the wing its normal streamlines soas to increase 4 wing C of the plane, these covers being the speed of the craft. The means for'slid t ably connecting the rear edges of the covers with the rear part of the wing not only permits movement of the covers, but also makes a water-tight joint at these points. The ends of the cover overlap the ends of the wings, as shown at 11, so that the spaces between the covers and the surfaces of the wings are closed by these portions 11.

Each cover may be formed of a light frame 12 covered with wing material 13, as shown in Figures 1, 2, 3 and 4, or the covers may be formed of thin metal, as shown at 14 in Figures 5, 6 and 7. The movement of the top cover should be equal to about 40% of the diameter of the stationary rib of the wing and the top cover should have approximately 30% greater movement than the lower one. As will be seen, when the top cover is raised to give the wing a greater camber the lower cover is also raised, giving the wing a slight under camber.

It is thought from the foregoing description that the advantages andnovel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

\Vhat I claim is 2- 1. An aeroplane wing comprising upper and lower flexible covers, means for hingedly connecting the front edge of each cover to the nose of the wing, means for slidably connecting the rear edge of each Cover to the v wing and means for raising and lowering the covers simultaneously.

2. An aeroplane wing comprising up er and lower flexible covers, means for hinge ly connecting the front edge of each cover to the nose of the wing, means for slidably connecting the rear edge of each cover to the wing, means for raising and lowering the covers simultaneously, such means comprising a shaft rotatably supported in the wing and operated by the pilot, arms on the shaft and links connecting-the arms with the upper and lower covers.

3. An aeroplane wing comprising upper and lower flexible covers, means for liingedly connecting the front edge of each cover to the nose of the wing, means for slidahly connecting the rear edge of each cover to the wing, means for raising and lowering the covers silnullam-ously, such means comprising a shaft rotatably supported in the wing and operated by the pilot,.arms on the shaft, links connecting the arms with the upper and lower covers and flexible members connecting each cover with a part of the wing.

4. In an aeroplane wing, a flexible cover hingedly connected with the nose of the Wing and extending rearwardly over the major portion of the wing, the rear edge of the cover having slots therein, fastening means carried 

